# _*_ coding: UTF-8 _*_
# @Time     : 2021/10/28 13:50
# @Author   : yangshuaishuai
# @Site     : http://www.hzdledu.cn/
# @File     : c14s1_错误与异常.py
# @Software : PyCharm

#异常
#异常是难以预知，在程序可能出现的错误，中断程序的运行
def foo1():
    for i in range(-2,3):
        print(50 / i)
#异常处理
#1.try - except
def foo2():
    for i in range(-2,3):
        try:
            print(50/i)
        except Exception as e:
            print(e)
#try-except-else
def foo3():
    for i in range(-2,3):
        try:
            print(50/i)
        except Exception as e:
            print(e)
        else:
            print('没有异常')
        print(f'--------第{i}次循环---------')
#try-except-else-finally
def foo4():
    for i in range(-2,3):
        try:
            print(50/i)
        except Exception as e:
            print(e)
        else:
            print('没有异常')
        finally:
            print('不管有没有异常都要执行')
        print(f'--------第{i}次循环---------')

#raise抛出异常
def div(a,b):
    if b==0:
        raise ZeroDivisionError('除数为0')
    return a/b
def foo5():
    a=int(int(input('输一个数：')))
    b=int(input('再输入一个除数：'))
    try:
        print(div(a,b))
    except Exception as e:
        print(e)
if __name__=="__main__":
    # foo1()
    # foo2()
   # foo4()
    foo5()

